On my '94 Sierra, The bumber is actually stamped, near the ball mount hole, with the bumber load limits. I believe it to be 200 lb tongue weight. Tongue weight is the amount of actual weight pushing down on the bumber at the ball mount, not the total weight of the trailer.
The towing capacity on the 1993 Sierra is about 8000 pounds via the bumper pull. The truck with the largest engine is rated for about 9000 pounds.
3500
Max towing capacity, 5000 lbs.
If you look at the black plastic pad around where the ball fits in the bumber you will see it written on the pad. Look at it close.
Max towing capacity for the 2005 GMC Sierra 1500, V8, Regular Cab, SLE 2 WD is 6300 lbs.
towing is 7500lbs
10000 lbs
4000
stock bumper hitch is class 1 @ 2000lbs
It is etched on either the top or bottom of the bumper where the ball goes my 91 states the bumper is rated at 3500 pounds,.
What are you trying to two
stock bumper hitch is class 1 @ 2000lbs